Datasheet

LTC3734
5
3734fa
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Current Sense
Threshold vs V
RUN/SS
(Soft-Start)
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
Current Sense Threshold
vs I
TH
Voltage
Load Regulation (without AVP) SENSE Pins Total Source Current
Supply Current vs SV
CC
Voltage
and Mode
Maximum Current Sense
Threshold vs Duty Factor
Maximum Current Sense
Threshold vs Percent of Nominal
Output Voltage (Foldback)
SV
CC
VOLTAGE (V)
4
0
SUPPLY CURRENT (µA)
1000
2500
6
3734 G04
500
2000
1500
5
7
ON
SHUTDOWN
DUTY FACTOR (%)
0
0
V
SENSE
(mV)
25
50
75
20 40 60 80
3734 G05
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
0
V
SENSE
(mV)
40
50
60
100
3734 G06
30
20
0
25
50
75
10
80
70
V
RUN/SS
(V)
0
0
V
SENSE
(mV)
20
40
60
80
10
30
50
70
1 2 3 4
3734 G07
5
V
SENSE(CM)
= 1.25V
COMMON MODE VOLTAGE (V)
0
V
SENSE
(mV)
76
72
68
64
60
4
3734 G08
1
2
3
5
V
ITH
(V)
0
V
SENSE
(mV)
30
50
70
90
2
3734 G09
10
–10
20
40
60
80
0
–20
–30
0.5
1
1.5
2.5
LOAD CURRENT (A)
0
NORMALIZED V
OUT
(%)
–0.2
–0.1
20
3734 G10
–0.3
–0.4
5
10
15
25
0.0
V
PSIB
= 5V
V
IN
= 15V
FIGURE 1
V
SENSE
COMMON MODE VOLTAGE (V)
0
I
SENSE
(µA)
0
3734 G12
–50
–100
2 4
50
100
6